After 1 year of using my Thien Baffle and dual canisters

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Forum topic by Holbs posted 01-21-2016 05:32 AM 849 views 0 times favorited 6 replies Add to Favorites Watch
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1863 posts in 2023 days

01-21-2016 05:32 AM

Topic tags/keywords: thein baffle dust collection

I built my Thien Baffle nearly 2 years ago but had horrible luck finding the sweet spot for particle separation, plus had the default Grizzly 30 (or maybe 20) micron filter bags with a couple holes in them. I ditched the bags and went dual Wynn filters. A year after light to medium table saw use (sometimes, I did roll my table saw outside) upon lots of MDF and plywood, here is what is in the plastic bags attached to my DC:

Here is my Thien Baffle project:
I have emptied out the blue 55 gallon barrel about 6x’s now, but never the plastic bags attached to the DC. I would say that Thien Baffle has been a success. Much much easier to dispose of the barrel than bags :)

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter

6 replies so far

View JeffP's profile


573 posts in 1386 days

#1 posted 01-21-2016 12:43 PM

Looks like a good result.

Would also be interesting to see how much if any fine dust has collected on the inside of your filters.

I’m thinking possible reduction of that would be a primary reason to go to the extent of a Thien baffle over just a simple “separator” for a filtered system.

Like many, I put my DC outside and just used a simple “PVC elbow inside a garbage can lid” style separator. It does a similar job with the crumbs/chips, but likely does not remove near as much of the fine stuff that could clog up a filter over time (if I had a filter).

-- Last week I finally got my $*i# together. Unfortunately, it was in my shop, so I will probably never find it again.

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Fred Hargis

4981 posts in 2487 days

#2 posted 01-21-2016 12:57 PM

While I agree that looks like you did good, get the fine dust that’s trapped between the pleats of the filter to see how much really got past the Thein. The very fine particles often follow the air stream, not being heavy enough to fall into the plastic bag. You may find you want to clean the filters annually or so.

-- Our village hasn't lost it's idiot, he was elected to congress.

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1863 posts in 2023 days

#3 posted 01-21-2016 02:13 PM

oooo… good points. I shall remove the filters this weekend and see.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter

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1863 posts in 2023 days

#4 posted 01-22-2016 01:18 AM

But I will say this, regardless of the filter canister results… I am happy to of done this project as it’s so much easier to empty out the barrel and not these bags.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter

View gfadvm's profile


14940 posts in 2684 days

#5 posted 01-22-2016 01:32 AM

My chip separator was one of the best projects I ever did. My cannister filter has one of those “flapper” things where you just turn the handle and the flapper knocks the dust out of the pleats in the filter (Grizzly cannister). I love this feature. I think you could easily make one of those flapper things.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View slimpickens's profile


10 posts in 1945 days

#6 posted 01-25-2016 11:09 PM

Did I miss something? I thought the Thein baffle was to separate the chips from the “dust”. If your collection system is leaving the chip/saw dust in the barrel but still collecting the breathable particles in the bag you’ve done a good job. I have yet to see a working shop that doesn’t have dust. I’ll bet the people that keep the TV show shops clean would verify that!

-- Slimpickens, Be true to yourself and helpful to others

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